Solve the equation 3cos2x + cosx = - 1 in the interval 0

Each month fir 7 months, samuel mow 3 lawns. How many more lawns does he need to mow before he has mowed 29 lawns?

A model train uses a scale of 1:48. One car of the model train is 6 inches long. What is the length of the actual train car?

What is the ratio of 12 percent

Is (-1, - 6) the solution to the following system? y = 4x - 2 Y = - 2x - 14

if a man walks his dog for 4 hours total a week, then how many weeks total does it take for him to walk his dog for a total of 48 hours?

Subtraction of two real numbers may be defined of what operation

Suppose there are three consecutive intergers. if two times the first is added to twice the middle, the results is 69 minus the largest number. what is the largest number?

Triangle ABE is similar to triangle ACD. AB = 10, BC=12, BE=4, and CD=y. Find y.

How do solve y=5x-8 y=-6x+3 by elimination

What's the simplified form of 2x + 3 - x + 5? A. 3x + 8 B. x + 8 C. x - 8 D. x - 2